*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#4f46e5;--primary-light:#818cf8;--success:#52c41a;--warning:#faad14;--danger:#ff4d4f;--text-primary:#1a1a2e;--text-secondary:#6b7280;--text-hint:#9ca3af;--bg-page:#f5f5f9;--bg-card:#fff;--border:#e8e8ed;--radius:12px;--radius-lg:16px;--shadow:0 2px 8px #0000000f;--shadow-lg:0 4px 16px #0000001a}html,body{color:var(--text-primary);background:var(--bg-page);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:16px;line-height:1.5}.mobile-container{background:var(--bg-page);width:100%;max-width:1024px;min-height:100vh;margin:0 auto;position:relative}.app-topbar{background:var(--bg-card);border-bottom:1px solid var(--border);z-index:90;justify-content:space-between;align-items:center;padding:12px 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